Progress with O2 is still going well, there's just a silly amount to do.
I've spent the past few days swearing at getting bump mapping in the game, creating a specular lighting effect. I think it was worth the pain.
The level without the lighting effect
With specular lighting
I'm really pleased with the effect. I did originally have both diffuse and specular, with the thinking that the outside level floors would look great with the diffuse mapping, but in reality the CPU cost wasn't worth it for the effect, it just didn't look as good as I wanted, so some perfectly good code was killed off today ( But I'm sure it'll make a return, in maybe an iso dungeon crawler, just a wild shot in the dark ).